I've been ttc for 10 months

I've been ttc for 10 months now, I'm 19 years old and my fiancé is 21. I'm healthy I don't smoke or drink whereas my fiancé drinks and smokes although he is quitting at the moment, I've been taking folic acid for the past three months we've been having regular intercourse but still no joy, is there anything we can do, I'm starting to worry that there's something wrong with me can anyone help or give me some advice thank you

It is quite normal for people to take up to two years to conceive naturally... That said, when you have been trying for a year, your GP will generally start investigations. So two more months, and if no joy, make an appointment.